Finding the Fourth Proportional to 3,821.31, 5,273.10 and 2,492.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,821.31 : 5,273.10 = 2,492.91 : x
2. Step 2: Convert to fraction form
   3,821.31/5,273.10 = 2,492.91/x
3. Step 3: Cross multiply
   3,821.31x = 5,273.10 × 2,492.91
4. Step 4: Simplify right side
   3,821.31x = 13,145,363.72
5. Step 5: Solve for x
   x = 13,145,363.72/3,821.31
6. Step 6: Final answer
   x = 3,440.02